Worn by: Arnold Schwarzenegger as John Matrix
Reference: Seiko H558-5000
Brand: Seiko
Hollywood action hero Arnold Schwarzenegger wore a bulky, multifunctional Seiko watch on his massive wrist in this testosterone-filled blockbuster. The watch, reference H558-5000, gained the nickname "Arnie" among Seiko aficionados for its appearance in Schwarzenegger films and inspired a contemporary re-edition from the Prospex collection. The modern ref. SNJ025 retains the original's bulky "tuna can" case and analog-digital display while replacing its standard quartz movement with a modern, solar-powered version.

Source: https://teddybaldassarre.com/blogs/brands/movie/references/watches